package book;

import java.util.Scanner;

public class DelOperation implements  IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("删除图书");
        Scanner scanner =new Scanner(System.in);
        System.out.println("请输入你要删除的书名:");
        String name = scanner.nextLine();
        int currentSize = bookList.getUsedSides();
        int pos =-1;
        //找到这本书
        int i=0;
        for (; i <currentSize; i++) {
            Book book =bookList.getBook(i);
            if(book.getName().equals(name)){
                System.out.println("找到了这本书");
                pos =i;
                break;
            }
        }
        if(i==currentSize){
            System.out.println("没有你要删除的书");
            return;
        }
        //开始删除
        for (int j=pos;j<currentSize-1;j++){
            Book book =bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setUsedSides(currentSize-1);
        System.out.println("删除成功");
    }
}
